Unit 1- Chemistry and Measurement Test Review

Biological sciences

focuses on living things

Physical sciences

focuses on non-living things

is chemistry a physical or biological science?

physical

what is chemistry?

the study of matter and the changes that it undergoes

chemical

any substance that has a definite composition

organic chemistry

the study of materials with carbon

inorganic chemistry

the study of inorganic materials

physical chemistry

the study of properties of matter

analytical chemistry

identification of materials

theoretical chemistry

predicting the properties of a new material

biochemistry

the study of the chemistry of living things

TRUE or FALSE; all chemicals in the lab are to be considered dangerous

true

when gathering glassware for an experiment, you should

a.) read all directions carefully before starting to know what equipment is necessary

b.) examine all glassware to check for chips or cracks

c.) clean all glassware that appears dirty

d.) all of the above

all of the above

Long hair in the laboratory must be

a.) always neatly groomed

b.) tied back or kept entirely out of the way with a hair band, barrette or other confining device

c.) held away from the experiment with one hand

d.) cut short

tied back or kept entirely out of the way with a hair band, hairpins, or other confining device

if a piece of equipment is not working properly, stop, turn it off, and tell

a.) the science instructor

b.) your lab partner

c.) the custodian

d.) your best friend in the class

the science instructor

TRUE or FALSE; Pipets are used to measure and dispense small amounts of liquids. You should draw the liquid into the pipet with your mouth.

False

Personal eyeglasses provide as much protection as

a.) a face shield

b.) none of the above

c.) splash proof chemical goggles

d.) safety glasses

none of the above

TRUE or FALSE; it is ok to start a laboratory experiment before you have read the entire procedure.

False

In a laboratory, the following should not be worn.

a.) dangling jewelry

b.) loose clothing

c.) all of the above

d.) sandals

all of the above

if you do not understand a direction or part of a lab procedure, you should

a.) fake it and figure out as you do the lab

b.) ask the instructor before proceeding

c.) try several methods until something works

d.) skip it and go on to the next part

ask the instructor before proceeding

Flammable materials, like alcohol, should never be dispensed or used near

a.) an open door

b.) a sink

c.) an open flame

d.) another student

an open flame

You are heating a piece of glass and now want to pick it up. You should

a.) use tongs or heat-resistant gloves

b.) pick up the end that looks cooler

c.) use a paper towel

d.) pour cold water on it

use tongs or heat-resistant glove

TRUE or FALSE; a student should never remove any chemicals or equipment from the laboratory

True

TRUE or FALSE; Work areas should be kept clean and tidy

True

TRUE or FALSE; You should always return all unused chemicals to their original containers

False

You have been injured in the laboratory (cut, burn, etc.). First, you should

a.) apply first aid yourself

b.) tell the science instructor at once

c.) visit the school nurse after class

d.) see a doctor after school

tell the science instructor at once

TRUE or FALSE; you are allowed to enter the chemical storage area any time you need an item

False

TRUE or FALSE; all unauthorized experiments are prohibited

True

After completing an experiment, all chemical wastes should be

a.) dumped in the sink

b.) disposed of according to your instructor's directions

c.) taken home

d.) left at your lab station for the next class

disposed of according to your instructor's directions

the following footwear is best in the laboratory

a.) sandals

b.) shoes appropriate for the weather

c.) open-toed

d.) closed-toed shoes

closed toed shoes

if a lab experiment in not completed, you should

a.) come in during lunch and finish while eating lunch

b.) sneak in after school and work alone

c.) discuss the issue with your instructor

d.) make up some results

discuss the issue with our instructor

if a laboratory fire erupts, immediately

a.) notify your instructor

b.) run for the fire extinguisher

c.) throw water on the fire

d.) open the windows

notify your instructor

TRUE or FALSE; Laboratory work can be started immediately upon entering the laboratory even if the instructor is not yet present.

False

TRUE or FALSE; Chipped or cracked glassware is okay to use.

False

Approved eye protection devices (such as goggles) are worn in the laboratory

a.) any time chemicals, heat or glassware are used

b.) to improve your vision

c.) to avoid eye strain

d.) only if you don't have corrective glasses

any time chemicals, heat or glassware are used

Horseplay or practical jokes in the laboratory are

a.) okay as long as it's funny

b.) okay as long as you don't think anyone will get hurt

c.) okay if you are working alone

d.) always against the rules

always against the rules

physical property of matter

a characteristic that can be observed or measured without changing the sample's composition (odor, color, density)

chemical property of matter

the ability of a substance to combine with or change into one or more substances

physical change

alters the form of a substance, but does not change into another substance

chemical change

substance is changed into a different substance with different properties